haiku

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Jérôme Duval 45872f7f9c kernel/vm: restrict permission changes on shared file-mapped areas

a protection_max attribute is added in VMArea.
a read-only opened file already can't be mapped shared read-write at the moment,
but can later be changed to read-write with mprotect() or set_area_protection().
When creating the VMArea, the actual maximum protection is stored in the area,
so that it can be checked when needed.
this fixes a VM TODO.

Change-Id: I33b144c192034eeb059f1dede5dbef5af947280d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3804
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

2021-03-23 17:40:31 +00:00

vm_page.h

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vm_priv.h

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vm_types.h

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vm.h

implement mlock(), munlock()

2020-12-03 07:58:05 +00:00

VMAddressSpace.h

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